Examples with SpringImitator com.tumblr.backboard.imitator.SpringImitator used on opensource projects

Example 1 with SpringImitator

use of com.tumblr.backboard.imitator.SpringImitator in project Backboard by tumblr.

the class FollowFragment method onCreateView.

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    mRootView = (ViewGroup) inflater.inflate(R.layout.fragment_follow, container, false);
    mCircle = mRootView.findViewById(R.id.circle);
    FrameLayout.LayoutParams leaderParams = (FrameLayout.LayoutParams) mCircle.getLayoutParams();
    mFollowers = new View[4];
    float diameter = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, DIAMETER, getResources().getDisplayMetrics());
    TypedArray circles = getResources().obtainTypedArray(R.array.circles);
    // create the circle views
    int colorIndex = 1;
    for (int i = 0; i < mFollowers.length; i++) {
        mFollowers[i] = new View(getActivity());
        FrameLayout.LayoutParams params = new FrameLayout.LayoutParams((int) diameter, (int) diameter);
        params.gravity = leaderParams.gravity;
        mFollowers[i].setLayoutParams(params);
        mFollowers[i].setBackgroundDrawable(getResources().getDrawable(circles.getResourceId(colorIndex, -1)));
        colorIndex++;
        if (colorIndex >= circles.length()) {
            colorIndex = 0;
        }
        mRootView.addView(mFollowers[i]);
    }
    circles.recycle();
    /* Animation code */
    final SpringSystem springSystem = SpringSystem.create();
    // create the springs that control movement
    final Spring springX = springSystem.createSpring();
    final Spring springY = springSystem.createSpring();
    // bind circle movement to events
    new Actor.Builder(springSystem, mCircle).addMotion(springX, MotionProperty.X).addMotion(springY, MotionProperty.Y).build();
    // add springs to connect between the views
    final Spring[] followsX = new Spring[mFollowers.length];
    final Spring[] followsY = new Spring[mFollowers.length];
    for (int i = 0; i < mFollowers.length; i++) {
        // create spring to bind views
        followsX[i] = springSystem.createSpring();
        followsY[i] = springSystem.createSpring();
        followsX[i].addListener(new Performer(mFollowers[i], View.TRANSLATION_X));
        followsY[i].addListener(new Performer(mFollowers[i], View.TRANSLATION_Y));
        // imitates another character
        final SpringImitator followX = new SpringImitator(followsX[i]);
        final SpringImitator followY = new SpringImitator(followsY[i]);
        //  imitate the previous character
        if (i == 0) {
            springX.addListener(followX);
            springY.addListener(followY);
        } else {
            followsX[i - 1].addListener(followX);
            followsY[i - 1].addListener(followY);
        }
    }
    return mRootView;
}